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  1. Galleries
  2. »
  3. Astrophotography
  4. » Andromeda

 
Andromeda...

Astrofotografia

View gallery (7 photos)

Andromeda sent on December 31, 2012 (13:58) by Manu3287. 12 comments, 923 views.

Posa B f/5.6, ISO 800, tripod.

Vallo Torinese, 30/12/2012 Non potevo resistere dal non riprendere uno dei più bei "oggetti" celesti... Purtroppo l'obiettivo è sempre l'amico SIGMA 135-400 @400mm f5.6. 15x148s+1x240s. 6dark, 8bias e 5flat. Tutto su montatura eq3-2 motorizzata RA. Nessun inseguimento manuale. Elaborazione con IRIS+PS6... Si può fare di meglio considerando che c'è chi ottiene gli stessi risultati con una singola posa da 30s... :O Buon anno a tutti!





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avatarsenior
sent on December 31, 2012 (15:16) | This comment has been automatically translated (show/hide original)

One must always consider the result according to the instruments used: for me, just because you have already used a motorized eq3 only in RA and without a guide, this photo is fabulous! If you had made an astrograph from 6000 euro and its frame-tank, to you, you could do better.
Congratulations and Happy New Year!

Clear

avatarjunior
sent on December 31, 2012 (16:15) | This comment has been automatically translated (show/hide original)

Hello kiara,
Thanks for the comments ...!
But according to you, what you can still improve with the equipment I have?
I will try to change the lens and possibly "pull" the single most posing for seeing what you can get without having moved the ...
I would have a thousand questions to do, but for now I try and try again, then we see attempts on trial ...

1000 Thanks to you soon!

avatarsenior
sent on December 31, 2012 (18:50) | This comment has been automatically translated (show/hide original)

Hello, I wonder how you managed to hit Andromeda without autoguiding, I am amazed. Congratulations for the work performed with the single camera equipment, I have to admit that it is still valid the saying "want is power" ... Happy new year! Beppe

avatarjunior
sent on December 31, 2012 (19:09) | This comment has been automatically translated (show/hide original)

Hello Beppe!
It was not so difficult ... more or less know where it is ... point in that direction and I take a picture test with high sensitivity and low times just to see if I framed the object ... if necessary do some fine adjustment in dec, if he is still low, rather than risk losing unlock RA and wait for a moment that the rotation me take it to the center of the frame (up to 1 minute to the focal length). As soon as the position is the desired beginning of the chase.
However I do not think I've done a great thing, especially because I met many difficulties in arranging the equipment and so I think there is still room to improve a little. '
Tonight the sky is a bit 'hazy and I do not even put a try, but as soon as I want to testKing received the suggestions here and see what turns up ... I'm looking forward ... :-)

Hello!
A happy new year to you too!

Manuel

avatarsenior
sent on January 01, 2013 (20:20) | This comment has been automatically translated (show/hide original)

Manuel Grande! Thanks for the info, Andromeda is my next target! Happy Holidays! :-)

avatarsenior
sent on January 01, 2013 (21:40) | This comment has been automatically translated (show/hide original)

But according to you, what you can still improve with the equipment I have?

I think that with respect to this perhaps there would be a bit 'sharpen the focus. For post-production I would say that is not bad, maybe remove the light magenta and offer some 'stellar diameters. Despite the flat there is a gradient in the sky background, but I see that you photographed the night of 30 December, with a nearly full moon in the sky! Next time you should cose a moonless night, the picture quality greatly improves starting. To shake, unless you check the parking maniacally in polar you can not do anything without driving errors due to mechanical frame you limit the duration of the poses.
Keep it up and if you have 1000 questions do not hesitate to do it, this forum is here forthis.
a greeting
Clear

avatarsenior
sent on January 02, 2013 (9:27) | This comment has been automatically translated (show/hide original)

It's nice that the watchful eye of Chiara watch over us! :-) Chiara let me ask you: do you think that a refractor Meade ETX series can properly fulfill the task of recovery included planetary astrophotography such as Orion, Andromeda and other nebulae "close" and easy to take? A refractor almost 2000mm would be fine or even too little? But I believe that a type of apochromatic telescope is best suited for deep sky and it becomes a bit more complicated. wow! Thanks

avatarsenior
sent on January 02, 2013 (10:18) | This comment has been automatically translated (show/hide original)

Hello Beppe, too good! Well, I do not know very well the ETX, it seems to me, however, that in that series are especially Maksutov-Cassegrain and refractor. The Mak often have very long focal lengths in a stiff tube and are convenient to carry, but are not widely used for astrophotography of deep sky, more for the visual and the planetarium. A refractor 2000mm would be a beast two meters long! Would certainly be good for the planet because it expands so much, and if he had a generous diameter would be suitable all'astrofotografia, but such an instrument would not only huge, but extremely expensive, a more private amateur observatory that. Honestly refractors so big I have never seen.
To Deepsky ideal are certainly apochromatic refractors, which are often quite expensive, especially if you can reach diameters importanti (120-140 mm or more). But these are the top. I have an apochromatic (small, 80 mm and 480 mm focal length) my smaller telescope, but also the most beautiful, it is with this that I did most of my photos. For planets is not good at all, the focal length is too short. In my opinion if you want a little 'a handyman you'll want a newton at least one meter focal length and 200 in diameter, great for astrophotography and appropriate duplicator is also fairly well on the planets.

a greeting

Clear

avatarsenior
sent on January 04, 2013 (10:52) | This comment has been automatically translated (show/hide original)

Hello Clare, thanks for the info. I asked these questions because my brother is also interested in astronomy and then he saw that we could share the same instrument family. Was reported to 2000mm focal length :-| and referred all'ETX 125 that had a focal length of 1950mm and I see that it is no longer in the catalog Meade. If I can write you privately to ask advice on equipment? As I told David, I came too the conclusion that it is useless to spend a boatload of money in photographic lenses with much less when you can get more with a simple telescope, also using a webcam planetary like Philips SPC900NC with Sony CCD ICX098AK that has become unavailable because supplanted by economic and noisy CMOS.

Regarding the Maksutov-Cassegrainare very compact and transportable, for that interest me and are easier to use because they have everything built in, but if you suggest an APO at least 200mm in diameter do not know where to start because it is a concrete jungle, in the end what I care is to have a telescocpio automated and computerized, so as to reduce to a minimum the operations of structure, but at the same time have no problem with the quality of the lens as aberration and coma .... also the market is jam-packed with stuff, then at the end he always difficult to find a valid and complete equipment. Hello, Beppe

avatarsenior
sent on January 04, 2013 (11:31) | This comment has been automatically translated (show/hide original)

you suggest an APO at least 200mm in diameter

Beppe no, do not get confused! I have not suggested an apo 200 mm in diameter! wow would cost like a house! :-D (if any!) If I suggested a better reread * Newton * 200 mm in diameter. It 'something else, an apo, which stands for apochromatic, is an apochromatic refractor, in fact, that is corrected for chromatic aberration.

was reported to 2000mm focal length and referred all'ETX 125

In your previous post, however, spoke of refractor, the ETX 125 is not a refractor.

I think AGREE you first do some 'clarity on the various types of telescope: you're right, it's a real jungle. Send me a PM, okay? That here we are trendndo off topic.

hello!

Clear


avatarsenior
sent on January 04, 2013 (13:50) | This comment has been automatically translated (show/hide original)

Yes it's true and you're right, I'm a nosy incorregibile, sorry :-| I'm writing I do in private first ;-)

avatarsenior
sent on January 12, 2013 (18:50) | This comment has been automatically translated (show/hide original)

Bellissima! Very impressive!


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